Asphalt-cutter mechanism



1. PETERMANN. ASPHALT CUTTER MECHANISM.

APPLICATION FILED SEPT- !4, I917.

1,331,367. Patented Feb. 17,1920.

2 SHEETS-SHEET l.

M m u 15 if f? if i Z? fl 1/ :5. 15 1 i Ii vwamtoz 2X) J507tPZ67Wia7Z 70/ Mme (lbbozmu .l. PETERMANN.

ASPHALT CUTTER MECHANISM.

APPLICATION FILEDSEPT.1.4.. L911.

1,33 1 ,367. Patented Feb. 17,1920.

2 SHE ETS-SHEET 2.

m am za 1/ m ma avwm woz SNITED STATES PATENT OFFICE.

JOSEPH PETERMANN, OF PHILADELPHIA, PENNSYLVANIA.

ASPHALT-CUTTER MECHANISM.

Application filed September 14, 1917.

To all whom it may concern:

Be it known that I, Josnrrr PETERMANN, a citizen of the United States, residing at 61 19 Valnut St, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Asphalt-Cutter Mechanism, of which the following is a specification.

This invention relates to asphalt or concrete cutting mechanism, and has for its primary object to provide efficient and reliable means for cutting asphalt surfaces into strips, whereby the latter may be readily taken-up to permit of repaving or relaying surfaces.

Another object of the invention is to improve and simplify the construction disclosed in my co-pending application, filed June 20, 1917, bearing Serial No. 17 5941, by providing the asphalt cutter with a plurality of spaced cutting disks, one located in advance the other and having independent regu ting devices, the arrangement of the entenig disks being such as to cut asphalt or analogous surfaces into strips and to simultaneously loosen the same to effect their convenient removal from the bed therefor.

A. further object is to provide means for transversely varying the spaces between the cutting disks, so as to enable th machine to cut asphalt in different sized strips, and

to provide further vertical adjustable means for regulating the depth of cuts of the disks, or to raise the latter to inactive positions.

A. still further object is to provide asphalt-cutting mechanism of the above character. hich may be loaned in connection with an ordinary power-driven roller of the type employed for finishing and smoothing asphalt surfaces, and including means for positioning the cutting disks thereof above a street s ace when the roller is being employed in its common capacity.

lVi-th these and other objects in view, as will appear as the description proceeds, the invention consists in the novel features of construction, combination of elements and arrangement of parts to be hereinafter fully described, and having the scope thereof indicated in the appended claims.

In the drawings wherein has been shown.

Specification of Letters Patent.

Patented Feb. 17, 1920.

Serial No. 191,457.

one of the preferred embodiments of the invention Figure 1 is a vertical longitudinal sectional view taken through the asphalt cutting mechanism, and illustrating the same applied to a street roller.

Fig. 2 is a top plan view thereof.

Fig. 3 is a transverse sectional view taken along the line 3-3 of Fig. 1.

Fig. 4 is a detail perspective view of one of the disk-supporting plates.

Fig. 5 is an eleva ion of one of the cutting disks.

Similar characters of reference denote corresponding parts throughout the several views of the drawings.

In carrying out my invention, the same is preferably employed in conjunction with a street roller 1, the latter being of conventional construction including a roller 2, having an axle 8, the latter being journaled in bearings 4i mounted upon the side beams 5 of the roller. The beams are preferably extended a suitable distance beyond the forward part of the roller 2, and secured to the beams at points in advance of the roller 2 are a plurality of transversely extending channel beams 6.

Secured to the side beams and located between and extending parallel with the channel beams 6 are e i .Jality of cross rods 7 the extremities of tee latter being mount ed within bearings 8 carrying suitable holding blocks 8. the heari 8 being secured in any suitable manner to the side ocams 5. The rods 7 are adapted to extend through openings 9 formed in spaced blocks 10. so that the blocks will be supported against vertical movement by means of the side beams said blocks of course being shiftable transversely with regard to the rods 7. Each of the blocks 10 have certain sides thereof provided with dovetailed projec tions or flanges 11, which are adapted to be positioned within dovetailed grooves 12, formed in disl ;-supporting plates 13, said plates being arranged in pairs and connected at their upper edges by means of web members 14 which maintain the plates in their proper respective positions. Vertical slots 15 are formed in the plates 13, to accommodate the rods 7 and to permit of vertical adjustment of said plates.

' the disk Formed in the lower edges of the plates 13' are recesses 16, which are adapted to receive bearing blocks 17, the latter being provided with openings for the reception of the reduced ends of disk-carrying shaft-s18, the

said shafts being positioned between the plates and extending transversely of the latter. Rotatable with the shafts 18 are cutting disks 19, and carried by the shafts 18- and positioned between the disks 19 and the plates 13 are rollers 20, the latter being sufficiently large to extend below the lower edge of the plates 13', so as to prevent the latter from engaging with concrete surfaces. Nuts 21 are threaded upon the outer ends of said shafts to retain the latter in proper positions with regard to the plates13'.

In order to regulate the cutting depth of 19, thebl'ocks 10are provided with threaded openings 22, which are adapted to receive vertically extending feed screws 23,

the upper ends of the latter being journaled within the web members 14, and are further fecting the raising and lowering'of the cut ting disks. 1 v

It will be noted that the disks 19 are not located on the same axis, that is, the disk 19 is positioned in advance of the disk19 and the purpose of this construction is to facilitate the cutting of asphalt, and to permit the same to be conveniently taken up in strips. Thus when the mechanism is moving in the direction of the arrow B, the disk 19 will out: an incision into the asphalt 25, then by reason of the rearward location of the disk 19",, the strip of asphalt thus cut will be shifted transversely of its bed 26 so as to loosen: the strip from' said bed, this movement of the asphalt being effected by the incision cut by the disk 19 and by the lateral thrust imparted to the strip by the following disk 19. It wvill of course be understood that the roller can travel in a foiwvard or rearward direction, and the cut ting action of the di'sks'19 will be precisely the same in both instances;

In order tov vary the width of out ofthe disks 19, the blocks 10 are provided with bearings 27, which are adapted toreceive shafts 28, the free extremities of the latter l'iaving secured. thereto fixed pinions 29,

which mesh with a toothrack 30 secured to the upper surface; of, one of the channel beams 6; The shafts 28 are further provided with manipulating wheels 81, whereby of cutting an asphalt scope of its utility, by providing the duplex arrangement of the cutting disks 19. Also the a "rangement of the latter 1s a 'sallent feature of the present lnvention, as it enables the machine to cut the concrete or as-' phalt into strips, and at the same time to generally loosen the same from its bed, there'- by permitting of the convenient removal of the cut strips without resorting to the use of picks, chisels, wedges andsimilar means.

Having described my invention what is claimed as new is:

1. An asphalt cutter comprising supporting means, wheeled means carrying said supporting means, plates held to and adjustable vertically on opposite sides of said supporting means, jou-rnaled cutters carried by the plates and disposed between the plates and below the supporting means, a web member disposer above the supportingineans and fined to said plates, and an adjusting screw threaded in said supporting means and bearing on said web member. 7

2. An asphalt cutting apparatus comprising side beams, a. transverse beam, a transverse rack on said beam, transverse rods 7 spaced apart in parallehsm to said rack and interposed between and carried by the side beams, supporting means movable transversely of the apparatus on said transverse rous and having an upright, a longitudinally dispose shaft journaled in said upright and having a pinion. intermeshed with said rack, plates, held to and adjustable vertically at opposite sides of the supporting means and having vertical slots receivingsaid transverse rods, 21 web member disposed above the supporting neans and fixed to said plates, an adjusting screw threaded in the parallel relation inthe carrying means and 1 disposed longitudinally thereof and locatedone in advance of the other, whereby'the rear disk will serve the two-fold function strap and moving the same laterally. g In testimony whereof I afiiximy signature.

or .iosnrn PEflTERMANN. 

